WO2022253067A1 - Aerosol generating device - Google Patents

Abstract

Disclosed in the present invention is an aerosol generating device, comprising a housing and an aerosol medium, wherein one end of the housing is open, and an accommodating cavity and a heating body are arranged in the housing; the aerosol medium comprises an aerosol generating matrix segment and an aerosol extracting segment, a hollow cavity being disposed in the aerosol extracting segment, and the outer side wall of the aerosol extracting segment being provided with aerosol flow guide holes and air flow guide holes both in communication with the hollow cavity; after the aerosol medium extends into the accommodating cavity from the opening, the aerosol generating matrix segment is located in a heating area of the heating body, and the aerosol can permeate from the outer side wall and end face of the aerosol generating matrix segment; the outer side wall of the aerosol medium has a gap with the inner wall of the housing and is in sealed fit with the housing at the open end face; the aerosol flow guide holes are positioned in the open end face, and the air flow guide holes are positioned outside the open end face. The aerosol generating device provided by the present invention reduces the transfer resistance of the aerosol, and increases the amount of smoke of an aerosol generating product.

Description

Aerosol generating equipment

Cross References to Related Applications

This application claims the rights and interests of the Chinese patent application No. 202110623740.0 submitted on June 4, 2021, the entire content of which is hereby incorporated by reference.

technical field

The present invention relates to the technical field of novel aerosol products, and more specifically, relates to an aerosol generating device.

Background technique

Heat-not-burn aerosol generating devices (including heating cigarettes and low-temperature herbal products, etc.) generate aerosols by heating rather than igniting the aerosol-generating substrate, which can greatly reduce the generation of harmful substances, and consumers can choose independently Start or stop aerosol generation. At present, the working principle of the common heat-not-burn aerosol generating products is: the aerosol generating substrate absorbs heat from the heat source to generate aerosol, and the air is used as the carrier, and the aerosol generated after the aerosol generating substrate is heated is filtered through the filter and delivered into the mouth of the consumer.

There are three ways to achieve non-combustion in principle: the first is to replace combustibles; the second is to lower the temperature below the ignition point of combustibles; the third is to reduce the oxygen content of the combustion aid. In the prior art, for example, patents 202010241328.8 and 202010241686.9 respectively disclose an oxygen-poor heating cigarette component and a closed heat-not-burn cigarette and component. In this way, the oxygen content in the area of the aerosol-generating substrate is reduced, and the aerosol generation and extraction of the aerosol-generating substrate in a heating-not-burning state are realized. Since the transmission of aerosol is generally carried out along the axial direction of the cigarette, and the axial dimension of the cigarette is larger than the radial dimension, the problem in the above patent is: when there is no fresh air flowing through the aerosol generating matrix, the aerosol transmission resistance is relatively large, Aerosol generating products produce less smoke.

Contents of the invention

In view of this, the purpose of the present invention is to provide an aerosol generating device to reduce the transmission resistance of the aerosol and increase the amount of smoke of the aerosol generating product.

Based on the above purpose, the present invention provides an aerosol generating device, including a housing and an aerosol medium, wherein: one end of the housing is opened, and a housing chamber and a heating body disposed in the housing chamber are provided in the housing; the aerosol medium It includes an aerosol generating matrix segment and an aerosol extraction segment that are abutted against each other at the end face. A hollow cavity that runs through its length is arranged in the aerosol extraction segment. flow holes and air guide holes; when the aerosol medium extends into the accommodation cavity from the opening, the aerosol generating matrix segment is located in the heating area of the heating body, and when the heating body is heated, the aerosol can flow from the aerosol generating matrix segment The outer wall and the end face are exposed, and there is a gap between the outer wall of the aerosol medium and the inner wall of the shell, and it is sealed with the shell at the end face of the opening. The aerosol guide hole is located in the open end face, and the air guide hole is located outside the open end.

Optionally, the opening end surface is provided with a seal, and when the aerosol medium extends into the accommodating cavity, the seal is detachably mounted on the outer side wall of the aerosol medium.

Optionally, the sealing member is an elastic sealing ring.

Optionally, the material of the outer wall of the aerosol-generating matrix segment is a breathable material.

Optionally, at least one vent hole is opened on the outer side wall of the aerosol-generating substrate segment, and the aerosol can penetrate into the gap through the vent hole.

Optionally, the aerosol guide hole runs through the aerosol extraction section along the length direction perpendicular to the aerosol extraction section; the air guide hole runs through the aerosol extraction section along the length direction perpendicular to the aerosol extraction section The aerosol extraction section.

Optionally, the diameter of the air diversion hole is equal to or larger than that of the aerosol diversion hole.

Optionally, the number of the aerosol guiding holes is greater than or equal to the number of the air guiding holes.

Optionally, the aerosol medium further includes a functional filter rod section abutting against the aerosol extraction section at the end surface.

Optionally, the heating body surrounds and is installed on the inner wall of the housing and/or the heating body is installed on the bottom surface of the housing.

The aerosol generating device provided by the present invention includes a housing and an aerosol medium, the aerosol medium is extended from the opening of the housing into the accommodation chamber, the aerosol guide hole is located in the end face of the opening, and the air guide hole is located in the opening Outside the end face, when the heating body heats the aerosol matrix, the aerosol permeated from the outer wall of the aerosol matrix segment diffuses along the gap between the outer wall of the aerosol medium and the inner wall of the housing, and is guided by the aerosol The hole enters the hollow cavity, and the aerosol permeated from the end face of the aerosol matrix segment also diffuses into the hollow cavity, reducing the transmission resistance of the aerosol. When the consumer inhales, the external air enters the hollow cavity through the air diversion hole, and under the action of the Venturi effect and the Bernoulli principle, the aerosol migrates in the hollow cavity in a direction close to the mouth of the smoker. , and mixed with the external air entering the hollow cavity to form mainstream smoke with a large amount of smoke, which increases the smoke amount of the aerosol generating product. The above-mentioned mainstream smoke enters the consumer's mouth through the functional filter rod section.

Description of drawings

Preferred embodiments of the present invention will be described in detail below by accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein:

Fig. 1 is a schematic structural view of an aerosol generating device according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of an aerosol medium in an embodiment of the present invention;

Figure 3 is a schematic structural view of an aerosol medium in another embodiment of the present invention;

4 is a schematic cross-sectional view of an aerosol medium in an embodiment of the present invention;

Fig. 5 is a schematic diagram of the air flow in the aerosol generating device according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the installation of a heating body in an aerosol generating device according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of installation of a heating body in an aerosol generating device according to another embodiment of the present invention;

Fig. 8 is a schematic structural diagram of an aerosol generating device with end air intake in the prior art;

Fig. 9 is a schematic structural diagram of an aerosol generating device with air intake through sidewall through holes in the prior art.

Explanation of reference signs:

1: shell; 2: aerosol medium;

11: accommodating chamber; 12: heating body; 13: opening end face; 15: seal; 16: bottom face; 17: gap;

21: aerosol generation matrix section; 22: aerosol extraction section; 23: hollow cavity; 24: aerosol diversion hole; 25: air diversion hole; 26: end face; 27: vent hole; 28: functional filter rod section .

The best way to practice the invention

The present invention will be described in detail below in conjunction with examples. Wherein the same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

As shown in Figures 1 to 7, the aerosol generating device provided by the present invention includes a housing 1 and an aerosol medium 2, wherein: one end of the housing 1 is open, and the housing 1 is provided with an accommodating chamber 11 and a The heating body 12 in the housing cavity 11; the aerosol medium 2 includes an aerosol generating matrix section 21 and an aerosol extraction section 22 abutted against at the end face 26, and the aerosol extraction section 22 is provided with a hollow cavity 23 running through its length, and the air The outer wall of the sol extraction section 22 is provided with an aerosol diversion hole 24 and an air diversion hole 25 that are both connected to the hollow cavity 23; when the aerosol medium 2 extends into the accommodation cavity 11 from the opening, the aerosol generation matrix section 21 is located in the heating area of the heating body 12. When the heating body 12 is heated, the aerosol can penetrate from the outer side wall and the end face 26 of the aerosol generating matrix segment 21, and the outer side wall of the aerosol medium 2 and the inner wall of the housing 1 There is a gap between them, and it is sealed with the shell 1 at the opening end face 13 , the aerosol guide hole 24 is located inside the opening end face 13 , and the air guide hole 25 is located outside the opening end face 13 .

It should be noted that the aerosol generating matrix segment 21 completely enters the housing cavity 11, and the aerosol extraction segment 22 partially enters the housing cavity 11; , the air guide hole 25 is located on the opening end face 13 and the outer finger is located outside the housing 1; the direction indicated by the arrow in the figure is the flow direction of the aerosol or air; the above-mentioned heating body 12 includes a power supply and a control module, and the control module is connected with the power supply to Control the opening or stopping of heating of the heating body 12; in addition, the aerosol medium 2 is detachably connected with the housing 1, so as to facilitate the replacement of the aerosol medium 2; the aerosol generating matrix section 21 and the aerosol extracting section 22 can be arranged coaxially.

The aerosol generating device provided by the present invention includes a housing 1 and an aerosol medium 2, the aerosol medium 2 extends from the opening of the housing 1 into the housing cavity 11, and the aerosol guide hole 24 is located in the opening end face 13, The air guide hole 25 is located outside the opening end face 13, and when the heating body 12 heats the aerosol matrix, the aerosol permeated from the outer sidewall of the aerosol matrix section along the outer sidewall of the aerosol medium 2 and the inner wall of the housing 1 The gap between them diffuses and enters the hollow cavity 23 through the aerosol guide hole 24, and the aerosol permeated from the end surface 26 of the aerosol matrix section also diffuses into the hollow cavity 23, reducing the transmission resistance of the aerosol. When the consumer inhales, the external air enters the hollow cavity 23 through the air guide hole 25, and under the action of the Venturi effect and the Bernoulli principle, the aerosol moves in the hollow cavity 23 along the path close to the mouth of the smoker. Directional migration (as shown in the direction of the arrow in FIG. 5 ), and mixes with the external air entering the hollow cavity 23 to form mainstream smoke with a large amount of smoke, which increases the amount of smoke of the aerosol generating product.

As shown in Figure 5, Figure 6 and Figure 7, the opening end face 13 is provided with a seal 15, and when the aerosol medium 2 extends into the accommodation chamber 11, the seal 15 is detachably sealed and installed on the outer wall of the aerosol medium 2 superior. It should be noted that the seal 15 can be detachably sealed and installed on the opening end face 13 by means of engagement, concave-convex fit, etc.; the seal 15 and the outer sidewall of the aerosol medium 2 can be sealed by interference fit. In this embodiment, the outer wall of the aerosol medium 2 is sealed with the housing 1 at the opening end face 13 through the seal 15. When the seal 15 needs to be replaced, the seal 15 is removed from the opening end face 13, and the A new seal 15 is fitted to the open end face 13, improving the ease of maintenance operations of the aerosol generating device. Specifically, the sealing member 15 is an elastic sealing ring, which is cheap and easy to purchase, reducing the production cost of the aerosol generating device.

As shown in FIG. 3 , the material of the outer wall of the aerosol generating matrix segment 21 is a breathable material. It should be noted that the air-permeable material mentioned above may be high-permeable paper or non-woven fabric. The aerosol-generating matrix is wrapped with high-permeability paper or non-woven fabric to form an aerosol-generating matrix segment 21, and the aerosol can penetrate through the high-permeability paper or non-woven fabric to the space between the outer wall of the aerosol medium 2 and the inner wall of the housing 1 in the gap between. In this embodiment, the breathable material is easy to purchase, and the processing method of wrapping the aerosol generating matrix with the breathable material to make the aerosol generating matrix segment 21 is simple to operate, which improves the convenience of processing and production of the aerosol generating matrix segment 21, and further The production convenience of the aerosol generating equipment is improved.

As shown in FIG. 2 , at least one vent hole 27 is opened on the outer wall of the aerosol generating matrix segment 21 , and the aerosol can penetrate through the vent hole 27 into the gap. It should be noted that the plurality of ventilation holes 27 may be arranged in an orderly manner in the circumferential direction of the outer wall of the aerosol generating matrix segment 21 , or may be arranged arbitrarily. In this embodiment, the air holes 27 increase the size of the aerosol flow passage, and the aerosol can easily seep out from the outer wall of the aerosol generating matrix section 21, increasing the amount of smoke of the aerosol generating product.

As shown in Figure 4, Figure 5, Figure 6 and Figure 7, the aerosol guide hole 24 runs through the aerosol extraction section 22 along the length direction perpendicular to the aerosol extraction section 22; The length direction of the segment 22 runs through the aerosol extraction segment 22 . It should be noted that there can be multiple aerosol guide holes 24, and the multiple aerosol guide holes 24 are arranged circumferentially along the outer side wall of the aerosol extraction section 22; there are also multiple air guide holes 25, and the multiple air guide holes The guide holes 25 are arranged circumferentially along the outer wall of the aerosol extraction section 22 . In this embodiment, the aerosol diversion holes 24 and the air diversion holes 25 are all through holes, and the through holes are easy to process, which improves the convenience of processing the holes on the aerosol extraction section 22; in addition, the through holes increase the airflow The unimpeded circulation improves the flow efficiency of the airflow, which in turn enables the aerosol generating equipment to generate a larger amount of smoke faster.

As shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in the present embodiment, the aperture of air diversion hole 25 is equal to or greater than the aperture of aerosol diversion hole 24, and when consumer sucks, aerosol can be more Smoothly passing through the hollow cavity 23 into the consumer's mouth, improving the convenience of aerosol extraction.

In an embodiment of the present invention, the number of aerosol guide holes 24 is greater than or equal to the number of air guide holes 25, which reduces the transfer resistance of the aerosol, thereby increasing the amount of smoke of the aerosol generating product.

As shown in FIG. 4 , the aerosol medium 2 also includes a functional filter rod segment 28 abutting against the aerosol extraction segment 22 at the end face. It should be noted that the aerosol medium 2 may have a cylindrical structure, and the aerosol generating matrix section 21 , the aerosol extracting section 22 and the functional filter rod section 28 are all arranged coaxially. In this embodiment, the functional filter rod segment 28 can be provided with structures such as a filter structure or a fragrance substance load release structure, or a combination of the above-mentioned structures, which reduces harmful substances entering the consumer's mouth and improves consumer health. experience comfort.

In an embodiment of the present invention, the heating body 12 surrounds and is installed on the inner wall of the housing 1 and/or the heating body 12 is installed on the bottom surface 16 of the housing 1 . It should be noted that, the above-mentioned inner wall of the housing 1 includes the bottom inner wall of the housing 1 . As shown in FIG. 6, when the heating body 12 is heated in the circumferential direction, the heating body 12 surrounds and is installed on the inner wall of the housing 1, specifically, the outer wall of the heating body 12 is attached and installed on the inner wall of the housing 1, There is a gap between the inner sidewall of the heating body 12 and the outer sidewall of the aerosol medium 2, and the heating body 12 heats the outer sidewall and the end face of the aerosol generation matrix section 21 around the aerosol generation matrix section 21; as shown in Figure 7 As shown, when the heating body 12 is the center of heating, the heating body 12 is installed on the bottom surface 16 of the housing 1 and inserted into the aerosol generating matrix. It should be noted that the bottom surface 16 of the housing 1 and the opening end surface 13 of the housing 1 Back setting. The different installation methods of the heating body 12 in this embodiment improve the applicability of the aerosol generating device.

The following is under the same experimental conditions (pumping mode, heating temperature, capture mode, etc.), using the same aerosol-generating substrate (the experiment uses the same amount of orderly filled tobacco sheets), and trapping different airflow modes. The particulate matter was weighed and the average value was taken.

It should be noted that, as shown in Figure 8, end air intake refers to the entry of air from the end of the aerosol-generating matrix, and the incoming air moves towards the consumer's mouth together with the generated aerosol; the side air intake as shown in Figure 9 Wall through-hole air intake refers to the entry of air from the through-holes of the aerosol extraction section, and the incoming air moves towards the consumer's mouth together with the generated aerosol. The method of weighing the above-mentioned particulate matter is as follows: first, smoke the smoking machine according to a certain pattern; then, use a filter to collect all the particulate matter in the extracted smoke; finally, collect the collected particulate matter Weigh it. The experimental results are as follows: in the prior art, the total particle phase obtained by using the end air intake is 45.3 g/mg, and the total particle phase obtained by using the side wall through hole air intake is 44.9 g/mg, and the end air intake is used Appropriate with the weight of the total particulate matter generated by the sidewall through-hole air intake mode; the weight of the total particulate matter generated by the air intake mode adopted in an embodiment of the present invention is 68.6 grams/mg, compared with the prior art , the weight of the particulate matter increases by nearly 50%, that is, the use of the aerosol generating device of the present invention increases the amount of smoke of the aerosol generating product.

The aerosol generating device provided by the present invention includes a housing 1 and an aerosol medium 2, the aerosol medium 2 extends from the opening of the housing 1 into the housing cavity 11, and the aerosol guide hole 24 is located in the opening end face 13, The air guide hole 25 is located outside the opening end face 13, and when the heating body 12 heats the aerosol matrix, the aerosol permeated from the outer sidewall of the aerosol matrix section along the outer sidewall of the aerosol medium 2 and the inner wall of the housing 1 The gap between them diffuses and enters the hollow cavity 23 through the aerosol guide hole 24, and the aerosol permeated from the end surface 26 of the aerosol matrix section also diffuses into the hollow cavity 23, reducing the transmission resistance of the aerosol. When the consumer inhales, the external air enters the hollow cavity 23 through the air guide hole 25, and under the action of the Venturi effect and the Bernoulli principle, the aerosol moves in the hollow cavity 23 along the path close to the mouth of the smoker. Directional migration (as shown in the direction of the arrow in Figure 5), and mixed with the external air entering the hollow cavity 23 to form mainstream smoke with a large amount of smoke, which increases the smoke amount of the aerosol generating product. The functional plug segment 28 enters the mouth of the consumer.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

An aerosol generating device, characterized in that it includes a housing and an aerosol medium, wherein: One end of the housing is opened, and the housing is provided with an accommodating chamber and a heating body disposed in the accommodating chamber; The aerosol medium includes an aerosol generating matrix section and an aerosol extraction section abutting against each other at the end surface, the aerosol extraction section is provided with a hollow cavity running through its length, and the outer wall of the aerosol extraction section is provided with uniform an aerosol diversion hole and an air diversion hole communicated with the hollow cavity; After the aerosol medium extends from the opening into the accommodation cavity, the aerosol generating matrix segment is located in the heating area of the heating body, and when the heating body is heated, the aerosol can flow from the The outer wall and end face of the aerosol-generating matrix section penetrate through, and there is a gap between the outer wall of the aerosol medium and the inner wall of the housing, and is sealed with the housing at the open end face, and the air The sol guide hole is located in the end surface of the opening, and the air guide hole is located outside the end surface of the opening. The aerosol generating device according to claim 1, wherein the opening end face is provided with a seal, and when the aerosol medium extends into the accommodating chamber, the seal is detachably mounted on On the outer wall of the aerosol medium. The aerosol generating device according to claim 2, wherein the sealing member is an elastic sealing ring. The aerosol generating device according to claim 3, characterized in that the material of the outer side wall of the aerosol generating matrix segment is a breathable material. The aerosol generating device according to claim 3, characterized in that at least one vent hole is opened on the outer wall of the aerosol generating matrix section, and the aerosol can penetrate through the vent hole into the within the gap. The aerosol generating device according to claim 5, wherein the aerosol guide hole runs through the aerosol extraction section along the length direction perpendicular to the aerosol extraction section; the air guide hole runs along the The direction perpendicular to the length of the aerosol extraction section runs through the aerosol extraction section. The aerosol generating device according to claim 6, wherein the diameter of the air diversion hole is equal to or greater than the diameter of the aerosol diversion hole. The aerosol generating device according to claim 7, wherein the number of the aerosol guiding holes is greater than or equal to the number of the air guiding holes. The aerosol generating device according to claim 8, wherein the aerosol medium further comprises a functional filter rod section abutting against the aerosol extraction section at an end surface. The aerosol generating device according to any one of claims 1-9, wherein the heating body surrounds and is installed on the inner wall of the housing and/or the heating body is installed on the inner wall of the housing bottom surface.

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